Sushma Swaraj was an Indian lawyer, politician, and diplomat who is best known for holding the position of minister of external affairs during the first Narendra Modi administration (2014–2019). She passed away on August 6, 2019. She was a senior BJP leader and the second woman to hold the position after Indira Gandhi. Sushma Swaraj reportedly had a heart attack on August 6, 2019, in the evening. She was then taken to AIIMS New Delhi, where she later passed away from a cardiac arrest. The following day, she was cremated at the Lodhi crematorium in Delhi with full state honours.

Sir Surendranath Banerjee, also known as Rashtraguru, was an Indian nationalist leader under British rule (10 November 1848 – 6 August 1925). He was one of the founding members of the Indian National Congress and founded the nationalist group known as the Indian National Association. In contrast to Congress, Surendranath favoured the Montagu-Chelmsford Reforms, and in 1919, he split from Congress to found the Indian National Liberation Federation.

Every year on August 6, Hiroshima Day is observed to promote peace politics and increase public awareness of the consequences of the bombing of Hiroshima. On August 6, 1945, Hiroshima city was struck by an atomic bomb, instantly killing thousands of people. The Japanese city was atomically bombed on this day 76 years ago. It was the initial nuclear bomb attack on a city.

The first Venice International Film Festival took place between August 6 and 21, 1932. The first film shown at the festival was Dr. Jekyll and Mr. Hyde. The Venice Film Festival, also known as the Venice International Film Festival, is a film festival held annually in Venice, Italy. It is the world's oldest film festival and, along with the Cannes Film Festival and the Berlin International Film Festival, one of the "Big Three" film festivals.

On August 6, 1991, the first web page went live. Tim Berners-Lee created it to provide information about the World Wide Web project. It was executed on a NeXT computer at CERN, the European Organization for Nuclear Research. http://info.cern.ch/hypertext/WWW/TheProject.html was the first web page address.

Sri Lanka's 952/6d against India in August 1997 remains the highest Test score to this day. The Lankan Lions became only the second team in history to break the 900-run barrier in the longest format, thanks to Sanath Jayasuriya's 578-ball 340.

Aditya Narayan, an Indian singer, host, and actor, was born on August 6, 1987. He is the singer Udit Narayan's son. He is well-known for his work on Fear Factor: Khatron Ke Khiladi 9 and for hosting Indian Idol. Narayan was a son of Deepa and singer Udit Narayan. He announced in November 2020 that he would marry Shweta Agarwal in December of that same year. On December 1, 2020, they were wed in a small-scale ceremony in Mumbai that was only attended by close friends and family. In March 2022, a girl was born to them.

Alfred Tennyson, 1st Baron Tennyson, was an English poet who lived from August 6, 1809 to October 6, 1892. During Queen Victoria's reign, he served as Poet Laureate. Tennyson received the Chancellor's Gold Medal at Cambridge in 1829 for one of his early works, "Timbuktu." Poems, Chiefly Lyrical, his first solo collection of poems, was published in 1830. "Claribel" and "Mariana," two of Tennyson's most famous poems, were included in this collection. Although some critics described his verse as overly sentimental, it quickly became popular and brought Tennyson to the attention of well-known writers of the day, including Samuel Taylor Coleridge. Tennyson's early poetry was a major influence on the Pre-Raphaelite Brotherhood, with its medievalism and powerful visual imagery.

Actor and VJ Cyrus Sahukar was born in India on August 6, 1980. He is well-known for his comedic wit in hosting, spoofing, and satirical comedy shows like Semi Girebaal. On April 15, 2022, in Alibaug, he wed his longtime girlfriend Vaishali Malahara.

NASA states in 1996 that life might have once existed on Mars after examining meteorite ALH84001, which is thought to have come from that planet. The meteorite may contain traces of Martian life, according to a team of researchers led by NASA scientists and including lead author David S. McKay, who made the announcement on August 6, 1996. Few days later, Science published an article based on this. It was possible to see structures that some researchers believed to be the remains of bacterial-like lifeforms under a scanning electron microscope.